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A novel IMPDH1 mutation (Arg231Pro) in a family with a severe form of autosomal dominant retinitis pigmentosa
Journal article   Peer reviewed

A novel IMPDH1 mutation (Arg231Pro) in a family with a severe form of autosomal dominant retinitis pigmentosa

Sandeep Grover, Gerald A Fishman and Edwin M Stone
Ophthalmology (Rochester, Minn.), Vol.111(10), pp.1910-1916
10/2004
DOI: 10.1016/j.ophtha.2004.03.039
PMID: 15465556

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Abstract

To define ophthalmic findings in a family with autosomal dominant retinitis pigmentosa and a novel IMPDH1 gene mutation. Genetic and observational family study. Sixteen affected members of a family with autosomal dominant retinitis pigmentosa. Ophthalmic examination, including best-corrected visual acuity (VA), slit-lamp biomicroscopy, direct and indirect ophthalmoscopy, Goldmann kinetic perimetry, and electroretinography were performed. Deoxyribonucleic acid single-strand conformation polymorphism (SSCP) analysis was done. Abnormal polymerase chain reaction products identified by SSCP analysis were sequenced bidirectionally. All affected patients had the onset of night blindness within the first decade of life. Ocular findings were characterized by diffuse retinal pigmentary degenerative changes, marked restriction of peripheral visual fields, severe loss of VA, nondetectable electroretinography amplitudes, and a high frequency of posterior subcapsular lens opacities. Affected members were observed to harbor a novel IMPDH1 gene mutation. A novel IMPDH1 gene mutation (Arg231Pro) was associated with a severe form of autosomal dominant retinitis pigmentosa. Families affected with a severe form of this genetic subtype should be investigated for a mutation in the IMPDH1 gene.
Electroretinography Humans Night Blindness - diagnosis Child, Preschool Retinitis Pigmentosa - genetics Male Visual Acuity IMP Dehydrogenase - genetics Retinitis Pigmentosa - diagnosis Polymorphism, Single-Stranded Conformational Proline - genetics Point Mutation Genes, Dominant Pedigree Visual Fields Arginine - genetics Adolescent Polymerase Chain Reaction Aged, 80 and over Adult Female Aged Child Night Blindness - genetics

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